<html>
<body>
<p>Reports invalid definitions and usages of classes created with
  <code>dataclasses</code> or <code>attr</code> modules.</p>
<p><b>Example:</b></p>
<pre><code>
import dataclasses


@dataclasses.dataclass
class FullName:
    first: str
    middle: str = ""
    last: str
</code></pre>
</body>
</html>